稻田免耕直播油菜出苗及杂草发生的研究  

Study on Emergence of Oilseed Rape Directly Seeded and Weeds Occurrence in No-tillage Paddy

作　　者：石纪成 李艳大[2] 荣照山 李国农 欧西荣[2] 米湘成[4] 

机构地区：[1]湖南省宁乡县农业局,湖南宁乡410600 [2]湖南农业大学农学院,湖南长沙410128 [3]湖北省监利县农业局,湖北监利433300 [4]中国科学院植物研究所植被数量生态学重点实验室,北京100093

出　　处：《江西农业学报》2007年第6期38-39,42,共3页Acta Agriculturae Jiangxi

基　　金：国家自然科学基金项目(30300044);中科院知识创新工程重要方向项目(KSCX2-SW-124)

摘　　要：研究结果表明,浅耕油菜的出苗高峰期和出苗终止期分别为播后14d和播后49d,而免耕的分别为播后21d和播后63d,浅耕的出苗集中在播后7-21d,而免耕的出苗集中在播后14-28d。杂草发生量浅耕的比免耕的明显减少,杂草以看麦娘为主,发生量最大。The results indicated that the date of emergence peak and emergence termination were 14d and 19d after sowing respectively in shallow -tillage. In contrast, the date of emergence peak and emergence termination were 21d and 63d after sowing respectively in no -tillage; emergence of oilseed rape in shallow- tillage concentrated between 7d and 21d after sowing, but it concentrated between 14d and 28d after sowing in no - tillage. The amount of weeds occurrence in shallow - tillage after sowing was obviously less than that in no- tillage. The amount of Alopecurus aequalis Sobol was the greatest in all weeds.

关 键 词：油菜 免耕直播 出苗 杂草发生 

分 类 号：S565.4[农业科学—作物学]